Hello!I am trying to read data by QSPI (MCU STM32F722VC). But QSPI always reads out the last value written to DR register by previous operation and does not read data from data lines. For exapmle, DR value is 0xAA from previous write operation. Then ...

Hello!I am going to use stm32f722vc MCU and QSPI in my design. Before designing PCB I research QSPI on available hardware: board with stm32f722vc MCU installed and all GPIOs available on headers. I am trying to execute indirect read mode to fetch GPI...

Hello! I am working on designing USB audio class 2.0 device, based on stm32f722 with high speed USB external PHY USB3300. In USB audio class 1 mode the device works fine, but in UAC 2.0 mode device enumeration fails. Device descriptor and USB analyze...

Hello! I'm making an USB sound card and I need that it would have several audio channels configurations like at picture below. My thoughts about USB device topology:IT (1) - --------------- | --- SelectorUnit - FeatureUint - OTIT (2) - MixerUnit - ...

Posted on May 09, 2018 at 08:37 Hello! I need to capture signals on inputs with constant frequency for further investigation. I use the following scheme: set timer frequency needed with update DMA request and capture size for DMA, then get data fro...